TOI-2257 b is a Neptune-like exoplanet that orbits an M-type star. Its mass is 5.45 Earths, it takes 35.2 days to complete one orbit of its star, and is 0.145 AU from its star. Its discovery was announced in 2021.

PLANET TYPE
Neptune-like
DISCOVERY DATE
2021
MASS
5.45 Earths
PLANET RADIUS
2.194 x Earth
ORBITAL RADIUS
0.145 AU
ORBITAL PERIOD
35.2 days
ECCENTRICITY
0.5
DETECTION METHOD